#include <bits/stdc++.h>
#define in(x) freopen(#x".in","r",stdin)
#define out(x) freopen(#x".out","w",stdout)
#define make(x) freopen(#x".in","w",stdout)
#define ll long long
#define int long long
#ifdef MY_COMPUTER
#define debug(...) fprintf(stderr,##__VA_ARGS__)
#else
#define debug(...) void(0)
#endif
#define vector basic_string
#define pii array<int,2>

using namespace std;

inline int read()
{
	int s=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){
		if(ch=='-')
			 f=-1;
		ch=getchar();
	}
	while(ch>='0'&&ch<='9'){
		s=s*10+ch-'0';
		ch=getchar();
	}
	return s*f;
}

template<typename _it>
void read(_it a,_it b){
	while(a!=b) (*a)=read(),a++;
}
template<typename _it>
void write(const char* form,_it a,_it b,int op=0){
	while(a!=b) printf(form,*a),a++;
	if(op) puts("");
}
int s,x;
int gcd(int a,int b){
	a=llabs(a),b=llabs(b);
	if(!a) return b;
	return !b?a:gcd(b,a%b);
}
signed main(){
	s=read(),x=read();
	if(gcd(s,x)==1){
		puts("1");
		printf("%lld\n",s);
		return 0;
	}
	if(s%2==1&&x%2==0){
		for(int i=(x/3+2)/2*2+1;;i+=2){
			if(gcd(i,x)==1&&gcd((s-i)/2,x)==1){
				puts("3");
				printf("%lld %lld %lld\n",(s-i)/2,(s-i)/2,i);
				return 0;
			}
		}
	}
	else{
		for(int i=(s+1)/2;;i++){
			if(gcd(i,x)==1&&gcd(s-i,x)==1){
				puts("2");
				printf("%lld %lld\n",i,s-i);
				return 0;
			}
		}
	}
	return 0;
}